Handler then brings out her next guest Dr. Moniz. After talking about climate change, she then switches the subject to Stranger Things, where there is a Department of Energy that are doing experiments in a parallel universe, which releases a monster into "our" reality, and a few of the characters end up in the "upside down world."

Here's what Dr. Moniz had to say when he was asked to explain if they did that kind of work a la Stranger Things:

"First of all, I have never seen ["Stranger Things"], but I'm aware of it," Moniz told Handler and actors Don Cheadle and Joshua Jackson, who were discussing climate change. "Secondly, I believe this fictional D.O.E. laboratory was operating in the 1980s. You can draw whatever inference you wish from that. Third, I will note that actually we do work in parallel universes."

He chuckles after this, which throws everyone off because we don't know if he's joking or not. Joshua Jackson then just asks him, "Do you really?" to which Dr. Moniz straight faced said, "Yes."

Dr. Moniz goes on to explain that the Department of Energy handles many different things. They handled the Iran nuclear agreement, but also work on basic science, which "includes trying to understand the basic particles of nature and the structure of the universe."

"It turns out, theoretical physics addressing that looks at things like higher dimensions than three dimensions and parallel universes," Moniz said. "But I would not get carried away with some of the other things that happens in 'Stranger Things.'"